UICore class which will handle user interactions with the editor. These interactions
might be triggered via mouse, keyboard or touch devices. The class fill fire an event via
CKEditor's event system - "editorInteraction". The UI may listen to this event and
execute some actions - for example to show/hide toolbars.By default if user presses the Esc key, 'editorInteraction' event won't be fired. However, this behaviour can be changed
by setting {{#crossLink "CKEDITOR.plugins.ae_uicore/allowEsc:attribute"}}{{/crossLink}} config property in editor's configuration to true.